Major Contributor
No. Not this engine. I discussed the original 95 M50tu engine two years ago. This engine I left it in the corner of my garage until about three weeks ago.
I never had the chance to get comprerssion because it was not installed. I wasn't sure I got the timing correct either after almost taking it completely apart. That's why when I faced with the no start (because of a blown 80 A fuse) I did compression.
Tell me, if it is you, do you have any doubt after putting together the camshaft, chains and valves, then lower the engine and find the compression are 230 to 235 in every hole except the number 3 hole you get 180 that you did not get the timing right? Give me a reason you think timing is incorrect when you have these compression numbers.
Last edited by yaofeng; 07-12-2007 at 06:56 PM.
'01 540it, 6/01
'03 325i 5 speed, 9/02
'10 535ix. 9/09
'10 mini 6 speed
'15 mini countryman 6 speed
2 Grand Master
Thats the puzzling part to me and why I said I can't explain the comp results. I recently missed the timing on a vw golf and it idled low and ran with no balls, just as you described. I adjusted the timing one tooth at a time until I hit it right.Originally Posted by yaofeng
Sorry I can't provide more insight,
Dave
10/90 Build 525im, 630,000+km, Eibach/Sachs, Engine Rebuild
*RIP Oskar the DOG*
Major Contributor
First of all, to clear the idle speed out of the way. When I said the 525 with the 93 m50tu idles like the engine shuts down, I meant it idles so smooth if I didn't see the fan I would thing the engine is not on. Yes, it is this quiet.
This morning i did a little bench marking. On a level surface in first, the car started to move around 1,200 rpm. To really accelerate in first, I need to rev the engine to 2,500 rpm.
What are your numbers? I am only interested in the 525 numbers. So far I don't think I have rev'ed my 540 beyond 2,500 in any gear.
Last edited by yaofeng; 07-15-2007 at 05:19 PM.
'01 540it, 6/01
'03 325i 5 speed, 9/02
'10 535ix. 9/09
'10 mini 6 speed
'15 mini countryman 6 speed
Big, Big Time Poster
The 540 by nature is a high revving engine. It needs to run a good 10 minutes at 4,000 rpm once in a while, just to clear it's throat. Get her up to temperature and jump on the thruway and do 65 mph in 3rd to the next exit.
I love the voice at 6,000 + rpm, it's addicting.
six forward speeds
Grand Master
Call me, but looking at this photo, I'm sure I can see the intake cam is visibly out of time...
The square lobes at the back of the camshafts dont look like they're dead parallel... or is that a perspective trick of the camera or a vanos trick?
Major Contributor
Your're
'01 540it, 6/01
'03 325i 5 speed, 9/02
'10 535ix. 9/09
'10 mini 6 speed
'15 mini countryman 6 speed
3 Grand Master
Looks way out to me too. But I'm sure its not. Er...is it?
Call me
The square lobes at the back of the camshafts dont look like they're dead parallel... or is that a perspective trick of the camera or a vanos trick?
Oct '00 E46 330i. Feb '92 525i (departed)
Major Contributor
Are youLooks way out to me too. But I'm sure its not. Er...is it?
'01 540it, 6/01
'03 325i 5 speed, 9/02
'10 535ix. 9/09
'10 mini 6 speed
'15 mini countryman 6 speed
Grand Master
You're welcome.Are you
We were actually after a shot of the back end of the cams, the two square blocks that you're supposed to use to set up your timing.
3 Grand Master
you should read a book calledAre you
"how to win freinds.....
Is the 525 an auto....could it be the trans and NOT the engine?
My 535 moves off at idle.....
Gone but not forgotten
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